Work-guide for sewing machines



Sept. 27, 1932. R, J, SMLER 1,879,521

WORK GUIDE FOR SWING MACHINES Filed June 8, 1931 2 Sheets-Sheet l u 3mm/nto@ Sept 27, 1932 R. .1. SAILER '1,879,521

WORK GUIDE FOR- SEWING MCHIES Filed June', 19251 2 Sheets-Sheet 2 Patented Sept. 27,- 14932 carnal) STATES- PATENT oli-*FICE RUDOLPH :'r. sA-ILER, or VToWNLEY, NEW JERSEY, AssIGNoR 'ro THE SINGER MANIT- EAQTURING COMPANY, or ELIZABETH, NEW JERSEY, A CORPORATION or NEW JERSEY WORK-GUIDE ER SEWING MACHINES Appncation ined :tune s, 1931., serial No. 542,765'. l

This invention relatesto sewing machine work-guides and more particularly to work'- guides of the type commonly known as a transverse binder which has a U-shaped stripguiding passagewayformed at its delivery end with inclined strip-inverting edges which turn the strip outside-in as it is applied to the edge of the body-material being stitched. With work-guides of this and other. types it is often desirable to' provide the sewing machine throat-plate with a clearance recess to permit the work-guide to be properly located in sewing position. For ordinary sewing, with the work-guide removed, this recess serves no useful purpose and has a tendency to catch cross-seams and obstruct their free passage under the presser-foot.

The present invention has for an object to provide means foriilling this recess in the throat-plate when the work-guide is not in use. A further object of the invention is to provide a work-guide which is instantly shiftable into or outy of sewing position and with which is associated a work-engaging element for taking the place of the *workguide when the latter is not in use; the workengaging element requiring no especial attention by the operator.

With the above and other objects in view, as will hereinafter appear, the invention comprises the devices, combinations and arrangements of parts hereinafter described and particularly pointed out in the claims.

The'features of the invention andthe advantages attained thereby will be readily understood by those skilled in the art from the following detailed description of a preferred embodiment of vthe invention illustrated in the accompanying drawingsv in which Fig. 1 is a top plan view of the device with the work-guide lor binderin sewing position. Fig. 2 is a similarview with the binder retracted. `Fig. 3 is a bottom plan view of the device with the binder vpartially retracted. Fig. 4 is a similar view with the binder fully retracted as in Fig. 2. Fig. 5 is afront side elevation, partly in section, of the device with the binder in sewing position. Fig. 6 is a similar view with the binder retracted. Fig. 7 is a section on the line-J?,

Fig.y 3. Fig. 8 is a left-end elevation of the device and Fig. 9 is a sectional view of the.

device on the line 9-9, Fig. 3, but turned upright. v v

The invention is shown as embodied in'a sewing machine having the cloth-plate 1, throat-plate 2, reciprocating needle 3 and presser-foot 4. The throat-plate is formed with the usual feed-dogslots 5 and needlehole 6. The throat-plate is also formed in its upper or work-engaging face with a recess 7 disposed closely in advance of the needlehole 6. The ,recess 7 is adapted to receive, in sewing position, the lower portion of the inclined U-shaped delivery end 8 of the transverse binder 8, as shown in Figs. 1 and 5k; such binder being, in a broad sense, a workengaging member 'or work-gui de. The binder 8 hasfsupporting feet 9 which are secured by screws 10 to the slide-plate 11 mounted on the upper side of the supporting 'plate 12 removably closing the aperture 13 in vthe cloth-plate 1. The plate 12 is seated upon a ledge 14 bordering the aperture 13 in the cloth-plate 1 and is held in place by means of the fixed and manually swingable springfingers, 15 and 16, respectively, which underlap the ledge 14. y y

The slide-plate 11 which carries the binder 8 is formed with aslot 17 which is entered by the stationary guide-block 18 fixed to the supporting plate 12. The binder is thu-s mounted on top of the plate 12 to slide laterally of the throat-plate 2 and transversely of the line of seam-formation fromI sewing position, Figs. 1 and 5, to retracted position, Figs. 2 and 6. One edge of the slide-plate 11 is notched at 19 to receive the tip end of a detent-spring 20 which yieldingly holds the binder 8 in sewing position. A

Slidably mounted in the spaced guideblocks 21 on the 'under side of the supporting plate 12 and directly below lthe binder 8 is a bar 22' to one end of which is screwed one end of the leaf-spring 23 the other end of which is thickened to form a filler-piece 24 adapted to occupy and ill the recess 7 in the throat-plate 2 when such recess is vacated by retraction of the binder 8. When, the fillerpiece 24 occupies the recess 7, its upper or work-engaging and -supporting surface is iush with and forms a continuation of the` work-supporting surface of the throat-plate 2. The filler-piece 24 is formed on its under side with'an inclined lifting surface 25, Fig. 5, which, during the movement ofthe fillerpiece 24 to the left, engages the bottom'edge 26 of the recess 7 and elevates .the filler-piece 2,4 to its operative level in the recess 7, F ig. 6. the filler-piece 24 is retracted, itis also moved downwardly by its spring-shank 23, so as tou be out of the wayof theadvancing delivery end 8 of the binder'S'.'

11 andthe slide-bar 22, an interconnecting means comp-rising a lever 27 fulcrumed at 28 on the under side of the supportingplate 12. Theleve'r 27 has a slot 29 'in one end which is entered by a screw 30 carried bythe slide-bar 22. The 'other end Vof the lever 27 is formed with a slot 31'which-at times isy entered by Va coupling pin 32 carried bythe vertically yielding spring-arm- 33 secured to the slide-plate 11 which carries the binder 8.

`The tongue 34, Fig. 9, at Vone side of the slot 31, stands at a higher lever than the lateral extension 35 at the other side of such slot. lower end which is projected into the slot 31` by the vspring 33 far enough toengage the tongue 34 without danger of riding out of the slot 31 and over the upper face of the tongue 34 when the binder is being retracted.`

The lateral extension 35 of the lever 27 isdisposed at a level such that there is a suiiiciently positive engagement ofthe pin n 32 "with the ,adj acent side-wall of the slot 31 Ito retract the iller-piece 24 durin' thefirst part'of the advancing movement ofD the binder. When, the filler-piece is fully retracted to the position shown in Fig.' 9, the continued :advancing movement of the binder 8 causes the rounded lower end of the pin 32 to ride over' the corner ofthe slot 31 and across theupper face of the lateral extension 35 to the position shown in Fig. 1.

' When the b-inder is retractedgthe rst part of the retracting movement causes the coupling pin to side over the face of the lateral extension 35 of the lever27 until it finds the slot 31 and drops into the latter, thereby coupling the 'binder 8 to the filler-piece 24 and causin theY latter to be projectedl into the the delivery'end of the binder. e y Y.

Having thusset forth the nature" of the invention, what I claim herein is 1. The combination with a sewing machine throat-plate having a recess in its upper surface, of alwork-guide `movable from a retracted position to a sewing position in which a portion of said guide 1s recelvedin said recess, and means for filling said recess when 6 "said work-guide isretracted.

2.`The combination withasewing mach-ine The coupling pin 32 has a rounded l throat-platehaving a recess, of a work-guide movable from a retracted position to a sewv Y K throat-plate having a recess in its upper surface, of va work-guide `movablewfrom` a retracted Aposition toA Vfajsewing A.position "in i which a portion ofsaid guide is received in when said worksaid recess, and` `means connected" to'fs'aid workniide is retracted.

4. T e combinatlon vwith a sewing machine throat-plate formed with a needle-,hole and a recess in'ts upper surface in advance of said `needle-hole, of a pairk of interconnected reciprocally movable work-engaging members alternately received in said recess. y

5. The combination with a sewing machine` throat-plate formed with a-needle-hole `and f work-guide for filling said recess when said' There is provided between @the slideplate i a recess in its upper surface in advance of said needle-hole, ofl a pairof .slidably mount-` ed `work-engaging members adapted for alternatereception insa-id recess. .f i A Y 6. The combination'with a sewing machine throat-plate formed with a needle-hole and a recess in its upper surface` in advance of said needle-hole, ofa pair of movably mount- Ved work-engaging-members adapted `for alternate reception insaid recess, and means interconnecting said members to causeone member to be moved vin one direction'lwhen the other member is moved in another direction. i l Y i` 7 `The combinationwith a sewing machine throat-plate having a needle-hole and are-` cess `in its upper surface lin advance of said needlehole,of a binder having a `strip-inverting delivery end partially received in said recess, said binder beingzretractible from said recess transversely of the line of seam-formation, and means connected to said binder for filling said recess when said binder is retracted. e v f f 8. The combination with a sewing machine throat-plate having a recess in its upper face,

of aiiller-piece for said recess `movable laterallyof said throat-plate and vertically reli ative to the plane of said throat-plate.

9. The combination with a sewing machine throat-plate having a recess, of awork-guiding element and a filler-piece element adapted for alternate occupancy of the space within said recess, one of said elements being movable vertically relative to the plane of said throat-plate.` f l `10. The `combination with a sewing machine throat-plate having afrecess, of va workguiding ,element and a filler-piece element adapted for alternate occupano ofthe space within said recess, both of sai elements being mounted lfor movementflaterally ofsaid throat-plate and one of them being movable vertically relative to the plane of said throatplate.

11. In a sewing machine work-guide, a supporting-plate, a plurality of work-engaging members movably carried by said plate, and a pivoted element interconnecting said members to cause them to move simultaneously in opposite directions.

12. In a sewing machine work-guide, a supporting-plate, a plurality of work-engaging members slidably mounted on opposite sides of said plate, and a. pivoted lever interconnecting said members to cause them to move simultaneously in opposite directions.

13. In a sewing machine, the combination with a reciprocating needle and a throatplate having a recess in its upper face, of a ller-piece in said recess, a work-guide mounted for movement from a retracted position to a sewing position in which it is partially received in said recess, and means interconnecting said work-guide and said filler-piece and including an automatic coupling` and uncoupling device for withdrawing said iiller-piece from said recess during the irst part of the advancing movement oi the work-guide and permitting the filler-piece to dwell in retracted position during the last part of the advancing movement of the work-guide.

14. The combination with a supportingplate adapted for attachment to the clothplate of a sewing machine and having a binder-head retractibly mounted thereon, of a work-supporting element also carried by said plate and adapted for advancement to the position vacated by said binder-head.

In testimony whereof I have signed my name to this specification.

RUDOLPH J. SAILER. 

